A food web perspective on large herbivore community limitation
... The exceptional diversity of large mammals in African savannas provides an ideal opportunity to explore the relative importance of top-down and bottom-up controls of large terrestrial herbivore communities. Recent work has emphasized the role of herbivore and carnivore body size in shaping these tro ...
... The exceptional diversity of large mammals in African savannas provides an ideal opportunity to explore the relative importance of top-down and bottom-up controls of large terrestrial herbivore communities. Recent work has emphasized the role of herbivore and carnivore body size in shaping these tro ...
BIOMES
... biological community that occurs over a large area – A BIG group of LIVING things – Different kinds of species – Large geographical area/ REGION ...
... biological community that occurs over a large area – A BIG group of LIVING things – Different kinds of species – Large geographical area/ REGION ...
Modeling nutrient transport and transformation by pool
... dry mass imported through egg deposition and remineralisation (NFT >0) in all but two years (Fig. 2a). On average, dry mass export to terrestrial habitat was ~450% greater than dry mass imported to the aquatic habitat through egg masses. During the study period, a total of 19.3 kg of egg masses and ...
... dry mass imported through egg deposition and remineralisation (NFT >0) in all but two years (Fig. 2a). On average, dry mass export to terrestrial habitat was ~450% greater than dry mass imported to the aquatic habitat through egg masses. During the study period, a total of 19.3 kg of egg masses and ...
What is Soil Organic Matter? - AgEBB
... “The organic fraction of soil including plant, animal, and microbial residues, fresh and at all stages of decomposition… and highly carbonized compounds such as charcoal, graphite and coal” Soil organic matter = (2 x C) + O, H, N, P, S, etc. ...
... “The organic fraction of soil including plant, animal, and microbial residues, fresh and at all stages of decomposition… and highly carbonized compounds such as charcoal, graphite and coal” Soil organic matter = (2 x C) + O, H, N, P, S, etc. ...
JNCC Report No. 585: Conceptual Ecological Modelling of Shallow
... Seasonal variability Secondary production Sediment Sediment dynamics Sediment resuspension Sediment stability Sediment transport Sparse fauna Species trait Species trait Sublittoral Substratum ...
... Seasonal variability Secondary production Sediment Sediment dynamics Sediment resuspension Sediment stability Sediment transport Sparse fauna Species trait Species trait Sublittoral Substratum ...
Organisms as Ecosystems/Ecosystems as Organisms
... most of the mechanisms that are involved, we are much less able to predict how ecosystems will respond when conditions change. In a similar fashion, it is not always obvious how the dynamic associations that are typical of organisms maintain their coherence and integrity in the face of many environm ...
... most of the mechanisms that are involved, we are much less able to predict how ecosystems will respond when conditions change. In a similar fashion, it is not always obvious how the dynamic associations that are typical of organisms maintain their coherence and integrity in the face of many environm ...
Luxury consumption of soil nutrients
... Hobbie & Chapin 1998). As large amounts of organic matter are stored in arctic and subarctic ecosystems, the study of below-ground processes, including plant allocation, is important from a global change perspective (Hobbie et al. 2000). Another important characteristic of high latitude systems is t ...
... Hobbie & Chapin 1998). As large amounts of organic matter are stored in arctic and subarctic ecosystems, the study of below-ground processes, including plant allocation, is important from a global change perspective (Hobbie et al. 2000). Another important characteristic of high latitude systems is t ...
A New Year Greeting
... “One possible outcome of competition between two species is the ability to live in the same ecosystem while adapting to take advantage of slightly different niches so they are no longer in direct competition with each other. “Another possible outcome is for one species to out-compete the other and f ...
... “One possible outcome of competition between two species is the ability to live in the same ecosystem while adapting to take advantage of slightly different niches so they are no longer in direct competition with each other. “Another possible outcome is for one species to out-compete the other and f ...
Characteristics of the Marine Environment
... molecules through a semipermeable membrane from higher to lower concentrations – Osmosis removes water from hypotonic organisms – Osmosis adds water to hypertonic organisms ...
... molecules through a semipermeable membrane from higher to lower concentrations – Osmosis removes water from hypotonic organisms – Osmosis adds water to hypertonic organisms ...
LOTL 10 Soils
... Soil Particle Size Soil is composed of many particles of varying sizes. Soil scientists have classified soil particles into three major groups: Sand, Silt and Clay. Sand particles are the largest and tend to hold little water (good drainage) and allow good aeration. Clay particles are very small in ...
... Soil Particle Size Soil is composed of many particles of varying sizes. Soil scientists have classified soil particles into three major groups: Sand, Silt and Clay. Sand particles are the largest and tend to hold little water (good drainage) and allow good aeration. Clay particles are very small in ...
Ecology, Ecosystems and Food Webs
... Biomass pyramids, commonly measured as dry weight per square meter for each trophic level, can either mirror the energy pyramid (as for the abandoned field) or be inverted (as for the ocean). Inverted biomass pyramids result because the producers are eaten by consumers. ...
... Biomass pyramids, commonly measured as dry weight per square meter for each trophic level, can either mirror the energy pyramid (as for the abandoned field) or be inverted (as for the ocean). Inverted biomass pyramids result because the producers are eaten by consumers. ...
Chapter 2 Vocabulary - Flushing Community Schools
... ecosystems that share the same climate and have similar types of communities ...
... ecosystems that share the same climate and have similar types of communities ...
Standard B-6
... abiotic and biotic factors. There are two types of succession, primary and secondary. Primary succession occurs in an area that has not previously been inhabited: for example, bare rock surfaces from recent volcanic lava flows, rock faces that have been scraped clean by glaciers, or a city street. • ...
... abiotic and biotic factors. There are two types of succession, primary and secondary. Primary succession occurs in an area that has not previously been inhabited: for example, bare rock surfaces from recent volcanic lava flows, rock faces that have been scraped clean by glaciers, or a city street. • ...
3. and savannah ecosystems
... biomass (made of roots and rhizomes) and metabolic activity is located underground; secondly, there is a high turnover of those parts of the plant above ground; thirdly, the persistent or perennating parts of the plant are generally located near the soil level. ...
... biomass (made of roots and rhizomes) and metabolic activity is located underground; secondly, there is a high turnover of those parts of the plant above ground; thirdly, the persistent or perennating parts of the plant are generally located near the soil level. ...
Test Bank Exam #2 chapters 7-13
... Multiple Choice Questions 1. _______________, the predominant element of the Earth’s crust, accounts for almost __________ of the total percentage of weight. a. Iron, two-thirds b. Silicon, one-half c. Aluminum, one-quarter d. Oxygen, one-half 2. A _____________ is a naturally occurring, inorganic s ...
... Multiple Choice Questions 1. _______________, the predominant element of the Earth’s crust, accounts for almost __________ of the total percentage of weight. a. Iron, two-thirds b. Silicon, one-half c. Aluminum, one-quarter d. Oxygen, one-half 2. A _____________ is a naturally occurring, inorganic s ...
SC Biology Standards (LBee)
... abiotic and biotic factors. There are two types of succession, primary and secondary. Primary succession occurs in an area that has not previously been inhabited: for example, bare rock surfaces from recent volcanic lava flows, rock faces that have been scraped clean by glaciers, or a city street. ...
... abiotic and biotic factors. There are two types of succession, primary and secondary. Primary succession occurs in an area that has not previously been inhabited: for example, bare rock surfaces from recent volcanic lava flows, rock faces that have been scraped clean by glaciers, or a city street. ...
Regents_Bio_Stuff_files/Ecology 2008
... • In atmosphere, carbon is inorganic in the form of CO2 • Producers use CO2 to make organic compounds (photosynthesis) • Organisms break down organic compounds and release CO2 – Cell respiration for energy or decomposers produce this when breaking down detritus ...
... • In atmosphere, carbon is inorganic in the form of CO2 • Producers use CO2 to make organic compounds (photosynthesis) • Organisms break down organic compounds and release CO2 – Cell respiration for energy or decomposers produce this when breaking down detritus ...
NRT109 - Ecology W07
... function of ecosystems Potential Elements of the Performance: • Describe key characteristics of bacteria • Demonstrate techniques for the identification of bacteria including gram staining, culture of agar plates and microscopic examination of colony characteristics • Discuss the importance of vario ...
... function of ecosystems Potential Elements of the Performance: • Describe key characteristics of bacteria • Demonstrate techniques for the identification of bacteria including gram staining, culture of agar plates and microscopic examination of colony characteristics • Discuss the importance of vario ...
full syllabus - University of Vermont
... biogeochemical processes. Typically in engineering models, for example, water is ‘routed’ through stream and river networks as if they were inert open pipes, with somewhat simplified physical delays and highly simplified nutrient/pollutant dynamics. In most cases, the nutrient/pollutant dynamics are ...
... biogeochemical processes. Typically in engineering models, for example, water is ‘routed’ through stream and river networks as if they were inert open pipes, with somewhat simplified physical delays and highly simplified nutrient/pollutant dynamics. In most cases, the nutrient/pollutant dynamics are ...
Overview - Learning Center of the American Southwest
... Soil biota, including bacteria, algae, fungi, and soil invertebrates (arthropods, nematodes, and protists), are a diverse, but under-researched group of organisms. Bacteria, the most abundant group of soil biota, play an important role in the decomposition of organic matter. Certain types of bacteri ...
... Soil biota, including bacteria, algae, fungi, and soil invertebrates (arthropods, nematodes, and protists), are a diverse, but under-researched group of organisms. Bacteria, the most abundant group of soil biota, play an important role in the decomposition of organic matter. Certain types of bacteri ...
SOIL ORIGIN and DEVELOPMENT
... FACTORS AFFECTING SOIL FORMATION – PARENT MATERIAL – are broken up rocks that have started that process of WEATHERING • RESIDUAL SOILS - are soils formed in PLACE – Less common – Form SLOWLY from weathering ...
... FACTORS AFFECTING SOIL FORMATION – PARENT MATERIAL – are broken up rocks that have started that process of WEATHERING • RESIDUAL SOILS - are soils formed in PLACE – Less common – Form SLOWLY from weathering ...
factors that influence the “carrying capacity” of game species
... the natural limit of a population set by resources in a particular environment. This equals the mean maximum number or biomass of organisms of a given species that can be sustained or survive on a long-term basis within an ecosystem (Helms, 1998). According to Negrutiu (1983) the term that expresses ...
... the natural limit of a population set by resources in a particular environment. This equals the mean maximum number or biomass of organisms of a given species that can be sustained or survive on a long-term basis within an ecosystem (Helms, 1998). According to Negrutiu (1983) the term that expresses ...
12:15 Causey B
... severity have caused substantial declines over the last two decades; long-term changes in seagrass condition; disease in sea turtles; sponge die-offs; low reproduction in queen conch; cyanobacterial blooms; lost fishing gear and other marine debris ...
... severity have caused substantial declines over the last two decades; long-term changes in seagrass condition; disease in sea turtles; sponge die-offs; low reproduction in queen conch; cyanobacterial blooms; lost fishing gear and other marine debris ...
Human impact on the nitrogen cycle
Human impact on the nitrogen cycle is diverse. Agricultural and industrial nitrogen (N) inputs to the environment currently exceed inputs from natural N fixation. As a consequence of anthropogenic inputs, the global nitrogen cycle (Fig. 1) has been significantly altered over the past century. Global atmospheric nitrous oxide (N2O) mole fractions have increased from a pre-industrial value of ~270 nmol/mol to ~319 nmol/mol in 2005. Human activities account for over one-third of N2O emissions, most of which are due to the agricultural sector. This article is intended to give a brief review of the history of anthropogenic N inputs, and reported impacts of nitrogen inputs on selected terrestrial and aquatic ecosystems.